'99 dies at idle - Kawasaki KLR 650 Forum
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1987 to 2007 Wrenching & Mods For maintaining, repair or modifications of Generation 1 KLR's. 2007 and earlier.

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  #1  
Old 05-30-2008, 12:35 PM
Waldo1 Waldo1 is offline
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Default '99 dies at idle

My '99 just started this last night. Runs fine at speed, but when you roll off the throttle at a light, she gets down to about 1k RPM, sputters and dies. I have to give her about 1/2 throttle to get her to re-start and keep blipping the throttle to keep her above 1k RPM or she craps out. Ran great all day. Seemed to begin after the engine got warm. I'm eager to hear some sage advice. All hoses, fuel tank venting, simple troubleshooting that I can find looks to be OK. My bike is an ex-Kalifornia unit, so I think I'll start with pulling that emissions stuff off. Then blow out the carb. What else!?!

Take care,

Waldo1
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  #2  
Old 05-30-2008, 01:56 PM
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double a double a is offline
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What is your idle speed when warmed up? Also how old is the spark plug? Did it happen when the tank was at a low level?
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Old 05-30-2008, 02:08 PM
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DXKLR DXKLR is offline
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I think the first thing i would try is to drain the tank, put a gallon of gas in there, add a half can of Seafoam and run that out, then do another gallon and rest of Seafoam. It almost sounds like you might have some dirt or something in the carb...It sounds like the idle mixture circuit is the culprit, in that when you let off the throttle the needle will lower back into the Main cutting off that supply and the idle mixture needle takes over. Has your bike had the OEM idle mixture plug removed under the carb? If not, you might want to remove it and open your mixture screw 2 1/2 turns from a soft seat.
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Old 05-30-2008, 02:10 PM
Waldo1 Waldo1 is offline
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Idle speed when warm has generally been right around 1k. The tank had been about 1/3 full and I had topped it off about 1 day prior. Had ridden about 55 miles on that tank before this happened.

Take care,

Waldo1
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Old 05-30-2008, 02:24 PM
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Bad gas??? Bring your idle speed up to about 1250-1500. Mine did not like 1k idle at all.
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  #6  
Old 05-30-2008, 02:32 PM
Waldo1 Waldo1 is offline
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Bring warm-idle speed up to about 1250-1500?
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Old 05-30-2008, 02:46 PM
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yes....1250 if it will hold there. That is the middle of the idle spec.
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Looking to get back into KLR's sometime soon.
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  #8  
Old 05-30-2008, 09:13 PM
Waldo1 Waldo1 is offline
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DX-

I already had a half-bottle of Sea-Foam in the 4 gallons (approx) remaining in the tank. Drilled out plug and removed the Idle speed jet, drained the carb bowl and blew compressed air through the Idler-jet through the bowl. Lots of sediment! Checked the air filter and all fittings/gaskets and re-assembled. Backed-out Idler jet to 2 1/2 turns from soft-seat and fired her up. Perfect!! Let her warm up, readjusted the idle screw to about 1300 RPM at warm adle and rode the P!$$ out of her for about 10 miles in town- perfect at all lights and stop signs. Idle never varied and nary a problem. Thanks, guys!!

Take care,

Waldo1
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  #9  
Old 05-30-2008, 09:51 PM
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don't that just make ya heart pitter patter, nothing like a fine running KLR, I am glad to hear she is purring like a kitten again.
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Looking to get back into KLR's sometime soon.
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  #10  
Old 08-10-2009, 09:25 PM
jjfreas jjfreas is offline
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Default I have the same problem mine is 07 and it just died on the highway and had to walk it

I have the same problem mine is 07 and it just died on the highway and had to walk it 6 miles back to my dads. I still have no Idea of what it could be. I will be cleaning out the carb, exhaust, and doing the seafoam thing as well hopefully this will fix it. I origanally thought sparkplug and bought a knew one put it in ran fine till it got warm / hot then died and wouldn't restart untill it was cold.




Quote:
Originally Posted by DXKLR View Post
I think the first thing i would try is to drain the tank, put a gallon of gas in there, add a half can of Seafoam and run that out, then do another gallon and rest of Seafoam. It almost sounds like you might have some dirt or something in the carb...It sounds like the idle mixture circuit is the culprit, in that when you let off the throttle the needle will lower back into the Main cutting off that supply and the idle mixture needle takes over. Has your bike had the OEM idle mixture plug removed under the carb? If not, you might want to remove it and open your mixture screw 2 1/2 turns from a soft seat.
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